Probably, assuming you were injured. Cars are generally supposed to stay off the sidewalks. You should get the medical treatment you need and talk with a personal injury lawyer in your area. I would recommend you get a copy of the police report, and take photographs of your injuries, e.g. bruising, scrapes, etc., before they heal up. DO NOT give a statement to the insurance company until you have had a chance to speak with a lawyer (or two). Good luck!
I'm an Oregon attorney, and I can tell you that it sounds like the driver of the car is liable for your injuries. You may have *some* comparative fault because of riding on the sidewalk, but we would need to look into that further before being sure.
You can give my firm a call and get a free consultation - our number is (503) 592-0606. I used to work FOR the big insurance companies, so I know how they run their side of things.
Based on the limited facts you've provided, there would be nothing preventing you from asseting a claim. More detail is needed to determine precisely what might be available to you. I'm licensed in Oregon and frequently handle auto vs. bike cases. I offer a no-obligation initial consultation. Feel fre to call my office.